A method, device, electronic device and storage medium for determining torsional stiffness

Abstract

The present invention discloses a method, device, electronic device and storage medium for determining torsional stiffness, wherein the method comprises: determining a three-dimensional structural model corresponding to a target gear shaft system; meshing the structural sub-models corresponding to each gear component in the three-dimensional structural model to obtain a simulation sub-model to be used corresponding to each structural sub-model; for each gear to be adjusted, determining at least one simulation sub-model to be used associated with the current gear to be adjusted, so as to construct a finite element model to be analyzed corresponding to the current gear to be adjusted based on the components to be adjusted corresponding to each sub-model to be adjusted; determining the parameters to be used corresponding to each finite element model to be analyzed under the corresponding gear to be adjusted; and determining the target torsional stiffness of the corresponding finite element model to be analyzed according to each parameter to be used. The problem of inaccurate determination of torsional stiffness is solved, and the effect of accurately determining the torsional stiffness of the gear shaft system is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile design, and in particular to a method, device, electronic equipment and storage medium for determining torsional stiffness. Background Art

[0002] The torsional stiffness of the transmission gear shaft system is an important input parameter in the design and development of torsional dampers. The accuracy of torsional stiffness can directly affect the development cycle and level of torsional dampers.

[0003] At present, the methods for determining the torsional stiffness of the gear shaft system can include: determination based on bench testing of transmission trial assembly samples, determination based on multi-body dynamics modeling simulation or lumped parameter method, or determination based on conventional finite element analysis method simulation. However, these methods have the problem that the period of determining the torsional stiffness is long or the torsional stiffness obtained is not accurate enough.

[0004] In order to quickly obtain the accurate torsional stiffness corresponding to the transmission gear shaft system, the method for determining the torsional stiffness needs to be improved. Summary of the invention

[0005] The present invention provides a method, device, electronic equipment and storage medium for determining torsional stiffness, so as to solve the problem of inaccurate determination of torsional stiffness of a gear shaft system.

[0006] According to one aspect of the present invention, there is provided a method for determining torsional stiffness, comprising:

[0007] Determine a three-dimensional structural model corresponding to a target gear shaft system; wherein the target gear shaft system includes a gear component, a spline hub, and a bearing component;

[0008] Meshing the structural sub-models corresponding to the components in the three-dimensional structural model to obtain simulation sub-models to be used corresponding to the structural sub-models;

[0009] For each gear to be adjusted, determining at least one simulation sub-model to be used associated with the current gear to be adjusted, so as to construct a finite element model to be analyzed corresponding to the current gear to be adjusted based on the components to be adjusted corresponding to each sub-model to be adjusted;

[0010] Determine the parameters to be used corresponding to each of the finite element models to be analyzed at the corresponding gear to be adjusted; wherein the parameters to be used include the load to be used and the torsion angle to be used;

[0011] According to each of the parameters to be used, a target torsional stiffness of the corresponding finite element model to be analyzed is determined.

[0012] According to another aspect of the present invention, there is provided a torsional stiffness determination device, comprising:

[0013] A three-dimensional structure model determination module, used to determine a three-dimensional structure model corresponding to a target gear shaft system; wherein the target gear shaft system includes a gear component, a spline hub and a bearing component;

[0014] A sub-model determination module to be used is used to mesh the structural sub-models corresponding to the components in the three-dimensional structural model to obtain simulation sub-models to be used corresponding to the structural sub-models;

[0015] A finite element model building module, for determining, for each gear to be adjusted, at least one simulation sub-model to be used associated with the current gear to be adjusted, so as to build a finite element model to be analyzed corresponding to the current gear to be adjusted based on the components to be adjusted corresponding to each sub-model to be adjusted;

[0016] A module for determining parameters to be used, used to determine the parameters to be used corresponding to each of the finite element models to be analyzed at the corresponding gear to be adjusted; wherein the parameters to be used include a load to be used and a torsion angle to be used;

[0017] The target torsional stiffness determination module is used to determine the target torsional stiffness of the corresponding finite element model to be analyzed according to each of the parameters to be used.

[0018] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0019] at least one processor; and

[0020] a memory communicatively connected to the at least one processor; wherein,

[0021] The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can perform the torsional stiffness determination method described in any embodiment of the present invention.

[0022] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the method for determining torsional stiffness described in any embodiment of the present invention when executed.

[0023] The technical solution of this embodiment determines the three-dimensional structural model corresponding to the target gear shaft system, and retrieves the three-dimensional structural model corresponding to the identification to be identified from a preset model database according to the identification to be identified corresponding to the target gear shaft system. Mesh the structural sub-model corresponding to each component in the three-dimensional structural model to obtain the simulation sub-model to be used corresponding to each structural sub-model, use the first-order hexahedral unit to mesh the structural sub-model corresponding to the component that meets the preset structural type, and use the second-order tetrahedral unit to mesh the structural sub-model corresponding to the component that does not meet the preset structural type, so as to obtain the simulation sub-model to be used corresponding to each simulation sub-model. For each gear to be adjusted, at least one simulation sub-model to be used associated with the current gear to be adjusted is determined, so as to construct the finite element model to be analyzed corresponding to the current gear to be adjusted based on the components to be adjusted corresponding to each sub-model to be adjusted, and after determining the simulation sub-model to be used associated with the current gear to be adjusted and the gear to be adjusted located in each simulation sub-model to be used, a spring unit to be used is established at the meshing point of each component to be adjusted to simulate the connection between each adjustment gear component in the target gear shaft system, so that the finite element model to be analyzed is closer to the real target gear shaft system. The corresponding parameters to be used for each finite element model to be analyzed under the corresponding gear to be adjusted are determined, and the target torsional stiffness of the finite element model to be analyzed can be obtained according to the load to be used and the torsional angle to be used of the finite element model to be analyzed. According to each parameter to be used, the target torsional stiffness of the corresponding finite element model to be analyzed is determined, so as to determine the torsional stiffness of the target gear shaft system based on the target torsional stiffness. The problem of inaccurate determination of torsional stiffness is solved, and the effect of accurately determining the torsional stiffness of the gear shaft system is achieved.

[0024] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 is a flow chart of a method for determining torsional stiffness provided according to Embodiment 1 of the present invention;

[0027] Figure 2 is a schematic structural diagram of a target gear shaft system provided according to Embodiment 2 of the present invention;

[0028] Figure 3 is a cross-sectional schematic diagram of a structure of a target gear shaft system provided according to a second embodiment of the present invention;

[0029] Figure 4 is a schematic diagram of a transmission path to be used according to Embodiment 2 of the present invention;

[0030] Figure 5 is a schematic diagram of a gear meshing point of a component to be adjusted provided in accordance with a second embodiment of the present invention;

[0031] Figure 6 is a cross-sectional schematic diagram of a gear meshing point provided according to a second embodiment of the present invention;

[0032] Figure 7 is a schematic diagram of establishing a spring unit to be used according to Embodiment 2 of the present invention;

[0033] Figure 8 is a schematic diagram of establishing a spring unit to be used according to Embodiment 2 of the present invention;

[0034] Fig. 9 is a connection schematic diagram of a spline hub to be connected provided according to the second embodiment of the present invention;

[0035] Fig.10 is a schematic diagram of creating a flexible unit by an input shaft according to Embodiment 2 of the present invention;

[0036] Fig.11 is a schematic diagram of constraining a finite element model to be analyzed according to a second embodiment of the present invention;

[0037] Fig.12 is a schematic structural diagram of a torsional stiffness determination device provided according to Embodiment 3 of the present invention;

[0038] Fig.13 It is a structural schematic diagram of an electronic device for the method for determining torsional stiffness implemented by the present invention. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0040] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0041] Embodiment 1

[0042] Figure 1 This is a flow chart of a method for determining torsional stiffness provided in Embodiment 1 of the present invention. This embodiment can be applicable to the case of determining the torsional stiffness corresponding to a gear shaft system. The method can be executed by a torsional stiffness determination device. The torsional stiffness determination device can be implemented in the form of hardware and / or software. The torsional stiffness determination device can be configured in an electronic device that can be used to execute the torsional stiffness determination method.

[0043] like Figure 1 As shown, the method includes:

[0044] S110, determining a three-dimensional structural model corresponding to a target gear shaft system.

[0045] Among them, the target gear shaft system can be understood as a transmission gear shaft system, which can be installed in a vehicle. Generally, gears that change speed can be called transmission gears. The transmission gear shaft system can usually include multiple gear components, as well as bearings, spline hubs, synchronizers and other components connected to each gear. The three-dimensional structural model can be understood as a structural model obtained after three-dimensional simulation of the target gear shaft system. It should be noted that the obtained three-dimensional structural model is proportional to the target gear shaft system, that is, the three-dimensional structure completely matches the target gear shaft system.

[0046] In the present technical solution, taking the target gear shaft system as the transmission gear shaft system in the vehicle as an example, the torsional stiffness of the transmission gear shaft system at each gear position is an important input parameter in the design and development of the torsional damper, which can directly affect the development cycle and level of the torsional damper. In order to more quickly and conveniently determine the torsional stiffness corresponding to the transmission gear shaft, the torsional stiffness can be calculated by the finite element analysis model corresponding to the transmission gear shaft, and the torsional stiffness of the corresponding finite element analysis model can be used as the torsional stiffness corresponding to the transmission gear shaft system. Before determining the finite element analysis model corresponding to the transmission gear shaft system, it is necessary to obtain the three-dimensional structural model corresponding to the transmission gear shaft system, and further, the corresponding three-dimensional structural model is processed to obtain the finite element analysis model corresponding to the transmission gear shaft system.

[0047] Optionally, determining a three-dimensional structural model corresponding to a target gear shaft system includes: determining an identification to be identified corresponding to the target gear shaft system; and retrieving a three-dimensional structural model corresponding to the identification to be identified from a model database according to the identification to be identified.

[0048] Among them, the identification mark to be identified can be understood as identification information corresponding to the target gear shaft system, such as the name or number of the target gear shaft system, etc. It can be understood that the three-dimensional structural model corresponding to the target gear shaft system can be determined according to the identification mark to be identified. The model database can be understood as a database for storing each three-dimensional model to be selected, and the model database includes at least one three-dimensional structural model to be selected, and each three-dimensional structural model to be selected matches the corresponding gear shaft system to be selected. The gear shaft system to be selected can be understood as the gear shaft system in the automobile, the gear shaft system in the substation, and the gear shaft system associated with other equipment. The three-dimensional structural model to be selected matches each gear shaft system to be selected.

[0049] Specifically, in order to facilitate the acquisition of the three-dimensional structural model to be selected corresponding to each gear shaft system to be selected, a model database can be pre-established to store the three-dimensional structural model to be selected corresponding to each gear shaft system to be selected. It can be understood that different gear shaft systems to be selected have different identification information corresponding to them. According to the corresponding identification information, the three-dimensional structural model to be selected that matches each gear shaft system to be selected can be determined. After determining the target gear shaft system, according to the identification to be identified corresponding to the target gear shaft system, the three-dimensional structural model corresponding to the identification to be identified is retrieved from the pre-established model database.

[0050] S120 , meshing the structural sub-models corresponding to the components in the three-dimensional structural model to obtain simulation sub-models to be used corresponding to the structural sub-models.

[0051] The simulation sub-model to be used can be understood as a model obtained after meshing the structural sub-model.

[0052] Specifically, after obtaining the three-dimensional structural model corresponding to the target gear shaft system, the structural sub-model corresponding to each structural component in the three-dimensional structural model is meshed, such as the structural sub-model corresponding to the gear component is meshed to obtain the corresponding simulation sub-model to be used.

[0053] Optionally, the structural sub-model corresponding to each component in the three-dimensional structural model is meshed to obtain the simulation sub-model to be used, including: determining whether the structural type of each component is a preset structural type; if so, meshing the structural sub-model corresponding to the corresponding gear component based on a first-order hexahedron method to obtain the simulation sub-model to be used of each component; if not, meshing the structural sub-model corresponding to the corresponding component based on a second-order tetrahedron method to obtain the simulation sub-model to be used of each component.

[0054] The preset structure type can be understood as a structure model determined according to actual needs, such as a pre-specified gear component, bolt, spring unit, etc., which is used to screen the various structural components in the three-dimensional structure model to retain the required main structural components. When the preset structure type is met, the structural sub-model corresponding to the corresponding component is meshed. If it does not meet the preset structure type, there is no need to perform the corresponding meshing process on the structural sub-model corresponding to the component.

[0055] Specifically, the target gear shaft system includes a variety of structural components, such as gear shafts, gear components, synchronizer rings, rivets, bolts, and necessary gaskets, etc., and the corresponding three-dimensional structural model of the target gear shaft system also includes structural sub-models corresponding to these components. Since the precision of each structural component is different, when meshing the structural sub-model corresponding to each component, it is necessary to mesh in different ways to obtain a more accurate simulation sub-model to be used. According to the simulation requirements, the more precise structural components among the structural components can be set as preset structural models, and the structural sub-models that match the preset structural model can be meshed using a first-order hexahedron method to obtain the corresponding simulation sub-model to be used. For the structural sub-model that does not match the preset structural model, a second-order tetrahedron method is used to mesh to obtain the corresponding simulation sub-model to be used.

[0056] S130. For each gear to be adjusted, determine at least one simulation sub-model to be used associated with the current gear to be adjusted, so as to construct a finite element model to be analyzed corresponding to the current gear to be adjusted based on the components to be adjusted corresponding to each sub-model to be adjusted.

[0057] Taking the target gear shaft system as the gear shaft system of the transmission as an example, the transmission is an important component of the automobile transmission system, and the gears to be adjusted can be understood as the various control gears in the automobile, such as 1st gear, 2nd gear, 3rd gear and reverse gear. The current gear to be adjusted can be understood as the gear corresponding to the current moment of the automobile. The components to be adjusted can be understood as the components located in each simulation sub-model to be used. The finite element model to be analyzed can be understood as the model obtained by simulating the simulation sub-model to be used based on the finite element analysis method.

[0058] Specifically, the torsional stiffness corresponding to the target gear shaft system is different under different gear positions to be adjusted. Therefore, the corresponding finite element model to be analyzed can be constructed according to the various components to be adjusted corresponding to the target gear shaft system under each gear position to be adjusted, so as to determine the torsional stiffness corresponding to the target gear shaft system according to the torsional stiffness of the finite element model to be analyzed under each gear position to be adjusted.

[0059] Optionally, at least one simulation sub-model to be used associated with the current gear to be adjusted is determined, so as to construct a finite element model to be analyzed corresponding to the current gear to be adjusted based on the components to be adjusted corresponding to each sub-model to be adjusted, including: determining at least one simulation sub-model to be used associated with the current gear to be adjusted according to the transmission path to be used corresponding to the current gear to be adjusted; determining the gear meshing points between the components to be adjusted of each simulation sub-model to be used according to preset connection information, and establishing spring units to be used at each gear meshing point; and constructing a finite element model to be analyzed for each component to be adjusted at the current gear to be adjusted based on each component to be adjusted and the spring units to be used corresponding to each gear meshing point.

[0060] The transmission path to be used can be understood as the power transmission path corresponding to the target gear shaft system under each gear to be adjusted. The preset connection information includes at least one gear meshing point, and each gear meshing point is used to connect two adjacent components to be adjusted. The spring unit to be used includes a linear spring and a nonlinear spring.

[0061] Specifically, different gears to be adjusted correspond to different transmission paths to be used, and different transmission paths to be used are associated with different simulation sub-models to be used. For each gear to be adjusted, the transmission path to be used corresponding to the current gear to be adjusted and at least one simulation sub-model to be used associated with the current gear to be adjusted are determined. Preset connection information is determined according to the connection relationship between the components to be adjusted in the target gear shaft system, so as to determine the gear meshing points between the components to be adjusted in each simulation sub-model to be used according to the preset connection information, and the corresponding springs to be used are established for each gear meshing point. Based on each component to be adjusted and the spring units to be used corresponding to each gear meshing point, a finite element model to be analyzed for each component to be adjusted at the current gear to be adjusted is constructed.

[0062] Optionally, based on preset connection information, the connection relationship between each component to be adjusted and the spline hub to be connected is determined, so as to construct a finite element model to be analyzed under the current gear to be adjusted based on each component to be adjusted and the corresponding spline hub to be connected.

[0063] Among them, the spline hub to be connected can be understood as a wheel hub connected with a spline shaft, which can be used to transmit torque. In actual applications, the preset connection information also includes connection information between each component to be adjusted and the spline hub to be connected. Based on the preset connection information, the component to be adjusted can be connected with the corresponding spline hub to be connected to construct a finite element model to be analyzed.

[0064] S140, determining the parameters to be used corresponding to each finite element model to be analyzed at the corresponding gear to be adjusted.

[0065] Among them, the parameters to be used include the load to be used and the torsion angle to be used. The load to be used can be understood as the load applied to the finite element model to be analyzed, and the torsion angle to be used can be understood as the rotation angle corresponding to the finite element model to be analyzed under different gears to be adjusted.

[0066] Specifically, after selecting the gear to be adjusted, the load to be used corresponding to each gear to be adjusted is applied to the finite element model to be analyzed, and the angle to be used corresponding to the finite element model to be analyzed is calculated to determine the target torsional stiffness of the finite element model to be analyzed based on the load to be used and the angle to be used.

[0067] Optionally, the parameters to be used corresponding to each finite element model to be analyzed in the corresponding gear to be adjusted are determined, including: for each gear to be adjusted, applying a load to be used to the finite element model to be analyzed according to the rated torque corresponding to the current gear to be adjusted; for each gear to be adjusted, calculating the finite element model to be analyzed of the current gear to be adjusted based on the torsion angle determination function, and obtaining the torsion angle to be used corresponding to the finite element model to be analyzed.

[0068] The torsion angle determination function may be understood as a function used to calculate the torsion angle of the finite element model to be analyzed, such as the Newton-Raphson method.

[0069] Specifically, for each gear to be adjusted, the rated torque corresponding to the finite element model to be analyzed under the current gear to be adjusted is determined, and the corresponding load to be used is applied to the finite element model to be analyzed according to the rated torque. At the same time, the finite element model to be analyzed is processed according to the Newton-Raphson function to obtain the torsion angle to be used corresponding to the finite element model to be analyzed.

[0070] S150: Determine the target torsional stiffness of the corresponding finite element model to be analyzed according to each parameter to be used.

[0071] Among them, the target torsional stiffness can be understood as the torsional stiffness corresponding to the finite element model to be analyzed under each gear to be adjusted. For example, if the current gear to be adjusted is the reverse gear, the target torsional stiffness is the torsional stiffness corresponding to the reverse gear.

[0072] In practical applications, the target torsional stiffness of the corresponding finite element model to be analyzed is determined according to each parameter to be used, including: determining the target torsional stiffness of the corresponding finite element model to be analyzed according to the ratio of the load to be used and the torsional angle to be used for each gear to be adjusted.

[0073] The technical solution of this embodiment determines the three-dimensional structural model corresponding to the target gear shaft system, and retrieves the three-dimensional structural model corresponding to the identification to be identified from a preset model database according to the identification to be identified corresponding to the target gear shaft system. The structural sub-model corresponding to each gear component in the three-dimensional structural model is meshed to obtain the simulation sub-model to be used, and the structural sub-model corresponding to the gear component that meets the preset structural type is meshed using the first-order hexahedral unit, and the structural sub-model corresponding to the gear component that does not meet the preset structural type is meshed using the second-order tetrahedral unit, so that the simulation sub-model to be used corresponding to each simulation sub-model can be obtained. For each gear to be adjusted, at least one simulation sub-model to be used associated with the current gear to be adjusted is determined, so as to construct the finite element model to be analyzed corresponding to the current gear to be adjusted based on the components to be adjusted corresponding to each sub-model to be adjusted, and after determining the simulation sub-model to be used associated with the current gear to be adjusted and the gear to be adjusted located in each simulation sub-model to be used, a spring unit to be used is established at the meshing point of each component to be adjusted to simulate the connection between each adjustment gear component in the target gear shaft system, so that the finite element model to be analyzed is closer to the real target gear shaft system. The corresponding parameters to be used for each finite element model to be analyzed under the corresponding gear to be adjusted are determined, and the target torsional stiffness of the finite element model to be analyzed can be obtained according to the load to be used and the torsional angle to be used of the finite element model to be analyzed. According to each parameter to be used, the target torsional stiffness of the corresponding finite element model to be analyzed is determined, so as to determine the torsional stiffness of the target gear shaft system based on the target torsional stiffness. The problem of inaccurate determination of torsional stiffness is solved, and the effect of accurately determining the torsional stiffness of the gear shaft system is achieved.

[0074] Embodiment 2

[0075] In a specific example, a model database is pre-established to store the three-dimensional structural models to be selected corresponding to each gear shaft system to be selected. In order to quickly obtain the three-dimensional structural model corresponding to the target gear shaft system, according to the identification to be identified corresponding to the target gear shaft system, the three-dimensional structural model corresponding to the identification to be identified can be retrieved from the pre-established model database, that is, the three-dimensional structural model corresponding to the target gear shaft system. The three-dimensional structural model corresponding to the target gear shaft system includes multiple components (i.e., components to be adjusted), such as, see Figure 2 and Figure 3 , the main components may include input shaft 1, idler shaft 2, gear 3, synchronizer spline hub 4, synchronizer gear ring 5, intermediate shaft 6, differential housing 7, straight shaft 8, pin 9, rivet 10, half shaft gear 11, planetary gear 12, bearing outer ring 13, bearing ball 14, bearing inner ring 15, needle roller 16, and necessary gasket 17, etc. Determine the structural sub-model corresponding to each component, and mesh each structural sub-model to obtain the simulation sub-model to be used corresponding to each structural sub-model. Among them, when meshing each structural sub-model, the first-order hexahedron method can be used to mesh the components that meet the preset structural type, such as Figure 2 and Figure 3 As shown in FIG. 1 , the pin 9, the rivet 10, the bearing outer ring 13, the bearing ball 14, the bearing inner ring 15, the needle roller 16 and the gasket 17 can be meshed using a first-order hexahedron method; otherwise, a second-order tetrahedron method is used for meshing, as shown in FIG. Figure 2 and Figure 3 As shown, the other components in the figure can be meshed using the second-order tetrahedron method.

[0076] It is understandable that for different gears to be adjusted, the power transmission path in the target gear shaft system (i.e., the transmission path to be used) is different, and the simulation sub-model to be used associated with each power transmission path, as well as the components to be adjusted located in each simulation sub-model to be used are also different. For each gear to be adjusted, the power transmission path corresponding to the current gear to be adjusted is determined, and the components to be adjusted in the current power transmission path, as well as the gear meshing points between the components to be adjusted, are determined. For example, Figure 4As shown, the torque load (i.e., the load to be used) is transmitted from the input shaft to the 4th gear 1st stage transmission driving gear through the 3 / 4 gear synchronizer, and then to the 4th gear 1st stage transmission driven gear, the 4th gear 2nd stage transmission driving gear, and the 4th gear 2nd stage transmission driven gear through the differential to the two half-shaft gears. Furthermore, the 4th gear 2nd stage transmission gear pair is also called a constant meshing gear pair because it is shared with other gears. The 2-stage transmission of 1 / 2 / 3 / 5 / 6 gears and the 3-stage transmission of reverse gear all use this gear pair. Then, the meshing point position of each gear pair is determined, wherein the meshing point position of the gear pair is on the common tangent line of the pitch circle of the active and driven gears included in the gear pair, and the tooth width direction is the midpoint position of the meshing area width. The meshing area width of the 4th gear 1st stage transmission gear pair is 14.38mm, then on the BB section corresponding to the midpoint of the meshing area width of 7.19mm, as shown Figure 5 As shown, a meshing point 301 of the 4th gear 1st gear change gear pair is created on the common tangent line of the two gear pitch circles. Further, the meshing area width of the 4th gear 2nd gear change gear pair is 29 mm, then on the CC section corresponding to the midpoint of the meshing area width of 14.5 mm, as shown in FIG. Figure 6 As shown, a 4-speed 1-stage gear pair meshing point 302 is created on the common tangent line of the two gear pitch circles. The established gear pair meshing points should include each gear pair meshing point corresponding to all gears of the transmission, that is, traversing all gears (ie, gears to be adjusted).

[0077] In the process of constructing the finite element model to be analyzed, according to actual needs, a spring unit to be used is established at each gear meshing point to simulate the deformation in the target gear shaft system based on the spring to be used, wherein the spring unit to be used includes a linear spring and a nonlinear spring. In this technical solution, the length of the spring unit to be used can be 0.1 mm, and the two end points A and B of the spring unit are respectively close to the master and driven gears corresponding to the gear pair. Furthermore, the two end points A and B of the spring unit are respectively connected through RBE3 units 31 and 32, as shown in FIG. Figure 7 As shown, connected to the 4-speed 1-stage transmission driving and driven gears: the slave point of RBE3 unit 31 selects spring endpoint A, and the master point selects the tooth surface unit node of at least 2 teeth near the meshing point of the 4-speed 1-stage transmission driving gear; the slave point of RBE3 unit 32 selects spring endpoint B, and the master point selects the tooth surface unit node of at least 2 teeth near the meshing point of the 4-speed 1-stage transmission driven gear. Further, the spring unit established at the 4-speed 1-stage transmission gear pair is named S-4-1.

[0078] When establishing the spring unit to be used at each meshing point, a linear spring unit or a nonlinear spring unit can be established according to actual needs. Exemplarily, a spring unit is established at the meshing point between the differential half-shaft gear and the planetary gear, and the direction of the spring unit is the same as the direction of the gear meshing force. It should be noted that the gear to be adjusted of the vehicle includes a forward gear and a reverse gear. When the gear to be adjusted is the forward gear, the spring unit direction of the spring unit established at the gear meshing point is the same as the direction of the gear meshing force. When the gear to be adjusted is the reverse gear, the spring unit direction of the spring unit established at the gear meshing point is opposite to the direction of the gear meshing force. Exemplarily, as Figure 8 As shown, at the meshing point 1201, on the common tangent line of the half-shaft gear pitch cone surface and the planetary gear pitch cone surface, at the midpoint of the meshing zone width, the spring unit is divided into two groups: one group has the same direction as the forward gear meshing force, which is S-forward; the other group of springs has the same direction as the reverse gear meshing force, which is S-reverse.

[0079] At the same time, according to the connection relationship between the spline hub and each component to be adjusted in the preset connection information, a distributed coupling unit RBE3 is established on both sides of the synchronizer spline hub: the main point of the RBE3 unit selects the surface node corresponding to about one-third of the spline width on the outer side of the spline hub, and the secondary point selects a point on the axis of the spline hub. For example, taking the 3 / 4 gear synchronizer as an example, RBE3 units 41 and 42 are established on both sides of the synchronizer spline hub 4, such as Fig. 9 As shown: the main point of RBE3 unit 41 is the surface node corresponding to about one-third of the spline width on the left side of the spline hub, and the center point corresponding to the main point area on the synchronizer axis is selected from the point; the main point of RBE3 unit 42 is the surface node corresponding to about one-third of the spline width on the right side of the spline hub, and the center point corresponding to the main point area on the synchronizer axis is selected from the point. Similarly, RBE3 units are established on both sides of the spline hub of the 1 / 2 gear synchronizer and the 5 / 6 gear synchronizer in the same way. At the same time, a distributed coupling unit RBE3 is established at the synchronous gear ring: the main point of the RBE3 unit selects the node on the tooth surface of the synchronous gear ring, the center point of the synchronous gear ring is selected from the point, and the KINCOUP unit is established to connect the components accordingly.

[0080] Establish RBE3 unit 102 at the input end spline of input shaft 1: select all nodes on the spline surface as the main point of RBE3 unit 102, and select the geometric center point 101 of the input end spline as the secondary point, such as Fig.10As shown. Next, define the assembly relationship between the various parts: define the contact relationship of the relevant parts on each gear shaft according to the actual contact relationship. Between the synchronous ring gear and the corresponding gear, the welding state is simulated by defining the contact relationship type as binding contact. Among them, in the present technical scheme, the 1st-stage speed-changing driven gears of 3 / 4 / 5 / 6 gears installed on the intermediate shaft are all interference fits, and the average diameter interference is 0.042 / 0.036 / 0.032 / 0.024mm respectively. The gear and the intermediate shaft are defined as an interference contact state according to the average interference, and based on this, the finite element model to be analyzed corresponding to the transmission gear shaft system is established.

[0081] Furthermore, the material properties corresponding to each sub-model to be used in the finite element model to be analyzed are defined to simulate the actual material properties of each component to be adjusted in the target gear shaft system. Among them, the material properties can include elastic modulus and Poisson's ratio, and the material properties can be set according to actual needs without specific requirements. At the same time, it is also necessary to determine the stiffness properties corresponding to the spring unit to be used established at each gear meshing point. Specifically, the stiffness properties can be determined according to the existing technology. In the present technical solution, it can be determined according to the product of the gear meshing width corresponding to the jth level of the gear meshing point at the i-th gear to be adjusted and the corresponding gear meshing stiffness.

[0082] In addition, in order to simulate the target gear shaft system more realistically, it is also necessary to apply corresponding boundary conditions to the target gear shaft system, such as, for example, Fig.11 As shown, the 1-3 direction translational freedom of the bearing outer ring 13 at both ends of the input shaft 1 is constrained; the 1-3 direction translational freedom of the bearing outer ring 13 at both ends of the intermediate shaft 6 is constrained; the 1-3 direction translational freedom of the bearing outer ring 13 at both ends of the differential is constrained; and the rotational freedom of the side gear 11 around the axial direction is constrained. Further, the bearing outer ring 13 is constrained by the RBE3 unit 1301, and the side gear 11 is constrained by the RBE3 unit 1101. The main points of the RBE3 unit are selected from the outer surface nodes of the bearing outer ring 13 and the inner spline surface nodes of the side gear 11, and the slave points of the RBE3 unit are selected from the corresponding geometric center points 1302 and 1102. Furthermore, at the supports at both ends of the reverse idler shaft 2 on the transmission case, the slave point 203 of the RBE3 unit 201 and the slave point 204 of the RBE3 unit 202 are constrained in translational freedom: the principal point of the RBE3 unit 201 is the surface node of the case support area, and the principal point of the RBE3 unit 202 is the inner surface node of the pin hole of the reverse idler shaft 2.

[0083] After completing the above steps, the finite element model to be analyzed corresponding to the target gear shaft system can be obtained. Furthermore, for each gear to be adjusted corresponding to the finite element model to be analyzed, the torsional stiffness corresponding to the finite element model to be analyzed under each gear to be adjusted can be determined, which is the target torsional stiffness corresponding to the target gear shaft system.

[0084] First, determine the power transmission path currently corresponding to the finite element model to be analyzed (i.e., the current power transmission path to be used). In this process, the spring unit at the meshing point where the power passes can be "activated" and the KINCOUP unit at the synchronizer where the power passes can be "activated" according to the power transmission path of the rated torque of gear i; the spring unit and KINCOUP unit that the power does not pass through can be "killed". In other words, the power transmission path to be used corresponding to the gear to be adjusted is determined, and each sub-model to be used associated with the power transmission path to be used, as well as the components to be adjusted located in each sub-model to be used are also determined. Each sub-model to be used associated with the current power transmission path to be used, and the corresponding components to be adjusted are activated, and each sub-model to be used associated with the current power transmission path to be used, and the corresponding components to be adjusted are closed.

[0085] Furthermore, the finite element model to be analyzed is processed based on the Newton-Raphson method (i.e., the torsion angle determination function), and the torsion angle to be used corresponding to the finite element model to be analyzed can be obtained, and then the load to be used applied to the finite element model to be analyzed under each gear to be adjusted is obtained. According to the ratio of the load to be used corresponding to the same gear to be adjusted and the torsion angle to be used, the target torsion stiffness corresponding to the finite element model to be analyzed can be obtained, and the obtained target torsion stiffness is used as the torsion stiffness corresponding to the target gear shaft system.

[0086] The technical solution of this embodiment determines the three-dimensional structural model corresponding to the target gear shaft system, and retrieves the three-dimensional structural model corresponding to the identification to be identified from a preset model database according to the identification to be identified corresponding to the target gear shaft system. Mesh the structural sub-model corresponding to each component in the three-dimensional structural model to obtain the simulation sub-model to be used corresponding to each structural sub-model, use the first-order hexahedral unit to mesh the structural sub-model corresponding to the component that meets the preset structural type, and use the second-order tetrahedral unit to mesh the structural sub-model corresponding to the component that does not meet the preset structural type, so as to obtain the simulation sub-model to be used corresponding to each simulation sub-model. For each gear to be adjusted, at least one simulation sub-model to be used associated with the current gear to be adjusted is determined, so as to construct the finite element model to be analyzed corresponding to the current gear to be adjusted based on the components to be adjusted corresponding to each sub-model to be adjusted, and after determining the simulation sub-model to be used associated with the current gear to be adjusted and the gear to be adjusted located in each simulation sub-model to be used, a spring unit to be used is established at the meshing point of each component to be adjusted to simulate the connection between each adjustment gear component in the target gear shaft system, so that the finite element model to be analyzed is closer to the real target gear shaft system. The corresponding parameters to be used for each finite element model to be analyzed under the corresponding gear to be adjusted are determined, and the target torsional stiffness of the finite element model to be analyzed can be obtained according to the load to be used and the torsional angle to be used of the finite element model to be analyzed. According to each parameter to be used, the target torsional stiffness of the corresponding finite element model to be analyzed is determined, so as to determine the torsional stiffness of the target gear shaft system based on the target torsional stiffness. The problem of inaccurate determination of torsional stiffness is solved, and the effect of accurately determining the torsional stiffness of the gear shaft system is achieved.

[0087] Embodiment 3

[0088] Fig.12 A schematic diagram of the structure of a torsional stiffness determination device provided in Embodiment 3 of the present invention, the device comprises: a three-dimensional structural model determination module 210, a sub-model determination module 220 to be used, a finite element model construction module 230, a parameter determination module 240 to be used and a target torsional stiffness determination module 250.

[0089] The three-dimensional structure model determination module 210 is used to determine a three-dimensional structure model corresponding to a target gear shaft system; wherein the target gear shaft system includes a gear component, a spline hub and a bearing component;

[0090] A sub-model determination module 220 to be used is used to mesh the structural sub-models corresponding to the gear components in the three-dimensional structural model to obtain simulation sub-models to be used corresponding to the structural sub-models;

[0091] The finite element model construction module 230 is used to determine, for each gear to be adjusted, at least one simulation sub-model to be used associated with the current gear to be adjusted, so as to construct a finite element model to be analyzed corresponding to the current gear to be adjusted based on the components to be adjusted corresponding to each sub-model to be adjusted;

[0092] The parameter determination module 240 is used to determine the corresponding parameters to be used for each finite element model to be analyzed under the corresponding gear to be adjusted; wherein the parameters to be used include the load to be used and the torsion angle to be used;

[0093] The target torsional stiffness determination module 250 is used to determine the target torsional stiffness of the corresponding finite element model to be analyzed according to each parameter to be used.

[0094] The technical solution of this embodiment determines the three-dimensional structural model corresponding to the target gear shaft system, and retrieves the three-dimensional structural model corresponding to the identification to be identified from a preset model database according to the identification to be identified corresponding to the target gear shaft system. Mesh the structural sub-model corresponding to each component in the three-dimensional structural model to obtain the simulation sub-model to be used corresponding to each structural sub-model, use the first-order hexahedral unit to mesh the structural sub-model corresponding to the component that meets the preset structural type, and use the second-order tetrahedral unit to mesh the structural sub-model corresponding to the component that does not meet the preset structural type, so as to obtain the simulation sub-model to be used corresponding to each simulation sub-model. For each gear to be adjusted, at least one simulation sub-model to be used associated with the current gear to be adjusted is determined, so as to construct the finite element model to be analyzed corresponding to the current gear to be adjusted based on the components to be adjusted corresponding to each sub-model to be adjusted, and after determining the simulation sub-model to be used associated with the current gear to be adjusted and the gear to be adjusted located in each simulation sub-model to be used, a spring unit to be used is established at the meshing point of each component to be adjusted to simulate the connection between each adjustment gear component in the target gear shaft system, so that the finite element model to be analyzed is closer to the real target gear shaft system. The corresponding parameters to be used for each finite element model to be analyzed under the corresponding gear to be adjusted are determined, and the target torsional stiffness of the finite element model to be analyzed can be obtained according to the load to be used and the torsional angle to be used of the finite element model to be analyzed. According to each parameter to be used, the target torsional stiffness of the corresponding finite element model to be analyzed is determined, so as to determine the torsional stiffness of the target gear shaft system based on the target torsional stiffness. The problem of inaccurate determination of torsional stiffness is solved, and the effect of accurately determining the torsional stiffness of the gear shaft system is achieved.

[0095] Optionally, the three-dimensional structure model determination module includes: a to-be-identified mark determination unit, used to determine the to-be-identified mark corresponding to the target gear shaft system;

[0096] A three-dimensional structure model acquisition unit is used to retrieve a three-dimensional structure model corresponding to the identifier to be identified from a model database according to the identifier to be identified; wherein the model database includes at least one three-dimensional structure model to be selected, and each three-dimensional structure model to be selected matches the corresponding gear shaft system to be selected.

[0097] Optionally, the sub-model determination module to be used includes: a structure type determination unit, used to determine whether the structure type of each gear component is a preset structure type;

[0098] The first sub-model to be used determines the sub-unit, and is used to mesh the structural sub-model corresponding to the corresponding gear component based on the first-order hexahedron method to obtain the simulation sub-model to be used of each gear component;

[0099] The second sub-model to be used determines the sub-unit, and if not, meshes the structural sub-model corresponding to the corresponding gear component based on the second-order tetrahedron method to obtain the simulation sub-model to be used of each gear component.

[0100] Optionally, the finite element model building module includes: a to-be-used transmission path determining unit, configured to determine at least one to-be-used simulation sub-model associated with the current to-be-adjusted gear position according to the to-be-used transmission path corresponding to the current to-be-adjusted gear position;

[0101] A gear meshing point determination unit, used to determine the gear meshing points between the components to be adjusted of each simulation sub-model to be used according to preset connection information; wherein the preset connection information includes at least one gear meshing point, and each gear meshing point is used to connect two adjacent components to be adjusted;

[0102] A spring unit establishing unit, used to establish a spring unit to be used at each gear meshing point; wherein the spring unit to be used includes a linear spring and a nonlinear spring;

[0103] A finite element model building unit, used to build a finite element model to be analyzed of each component to be adjusted at the current gear position to be adjusted based on each component to be adjusted and the spring unit to be used corresponding to each gear meshing point;

[0104] Optionally, the torsional stiffness determination device is also used to: determine the connection relationship between each component to be adjusted and the spline hub to be connected based on preset connection information, so as to construct a finite element model to be analyzed under the current gear to be adjusted based on each component to be adjusted and the corresponding spline hub to be connected.

[0105] Optionally, the module for determining the parameters to be used includes: for each gear to be adjusted, applying a load to be used to the finite element model to be analyzed according to the rated torque corresponding to the current gear to be adjusted;

[0106] For each gear to be adjusted, the finite element model to be analyzed of the current gear to be adjusted is calculated based on the torsion angle determination function to obtain the torsion angle to be used corresponding to the finite element model to be analyzed.

[0107] Optionally, a target torsional stiffness determination module is used to determine the target torsional stiffness of the corresponding finite element model to be analyzed according to the ratio of the load to be used and the torsional angle to be used for each gear to be adjusted.

[0108] The torsional stiffness determination device provided in the embodiment of the present invention can execute the torsional stiffness determination method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0109] Embodiment 4

[0110] Fig.13 A schematic diagram of the structure of an electronic device 10 that can be used to implement an embodiment of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0111] like Fig.13 As shown, the electronic device 10 includes at least one processor 11, and a memory connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 to the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0112] A number of components in the electronic device 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0113] The processor 11 may be a variety of general and / or dedicated processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as a torsional stiffness determination method.

[0114] In some embodiments, the torsional stiffness determination method may be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the torsional stiffness determination method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to perform the torsional stiffness determination method in any other appropriate manner (e.g., by means of firmware).

[0115] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0116] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0117] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0118] To provide interaction with a user, the systems and techniques described herein may be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0119] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0120] A computer system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The relationship between the client and the server is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0121] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0122] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for determining torsional stiffness, characterized in that: include: Determine a three-dimensional structural model corresponding to a target gear shaft system; wherein the target gear shaft system includes a gear component, a spline hub, and a bearing component; Meshing the structural sub-models corresponding to the components in the three-dimensional structural model to obtain simulation sub-models to be used corresponding to the structural sub-models; For each gear to be adjusted, determining at least one simulation sub-model to be used associated with the current gear to be adjusted, so as to construct a finite element model to be analyzed corresponding to the current gear to be adjusted based on the components to be adjusted corresponding to each sub-model to be adjusted; Determine the parameters to be used corresponding to each of the finite element models to be analyzed at the corresponding gear to be adjusted; wherein the parameters to be used include the load to be used and the torsion angle to be used; Determining the target torsional stiffness of the corresponding finite element model to be analyzed according to each of the parameters to be used; The step of meshing the structural sub-models corresponding to the components in the three-dimensional structural model to obtain simulation sub-models to be used corresponding to the structural sub-models includes: Determine whether the structural type of each gear component is a preset structural type; If yes, meshing the structural sub-model corresponding to the corresponding gear component is performed based on the first-order hexahedron method to obtain the simulation sub-model to be used of each gear component; If not, meshing the structural sub-model corresponding to the corresponding gear component is performed based on the second-order tetrahedron method to obtain the simulation sub-model to be used of each gear component; The step of determining at least one simulation sub-model to be used associated with the current gear to be adjusted, and constructing a finite element model to be analyzed corresponding to the current gear to be adjusted based on the components to be adjusted corresponding to each sub-model to be adjusted, includes: Determining at least one simulation sub-model to be used associated with the current gear to be adjusted according to the transmission path to be used corresponding to the current gear to be adjusted; Determine the gear meshing points between the components to be adjusted of each simulation sub-model to be used according to the preset connection information; wherein the preset connection information includes at least one gear meshing point, and each gear meshing point is used to connect two adjacent components to be adjusted; Establishing a spring unit to be used at each gear meshing point; wherein the spring unit to be used includes a linear spring and a nonlinear spring; Based on the components to be adjusted and the spring units to be used corresponding to the meshing points of the gears, a finite element model to be analyzed of each component to be adjusted in the current gear position to be adjusted is constructed.

2. The method according to claim 1, characterized in that: The step of determining a three-dimensional structural model corresponding to a target gear shaft system includes: Determine a mark to be identified corresponding to the target gear shaft system; According to the identification to be identified, a three-dimensional structural model corresponding to the identification to be identified is retrieved from a model database; wherein the model database includes at least one three-dimensional structural model to be selected, and each three-dimensional structural model to be selected matches the corresponding gear shaft system to be selected.

3. The method according to claim 1, characterized in that Also includes: Based on the preset connection information, the connection relationship between each of the components to be adjusted and the spline hub to be connected is determined, so as to construct a finite element model to be analyzed under the current gear to be adjusted based on each of the components to be adjusted and the corresponding spline hub to be connected.

4. The method according to claim 1, characterized in that: The determining of the parameters to be used corresponding to each of the finite element models to be analyzed at the corresponding gears to be adjusted includes: For each gear to be adjusted, applying a load to be used to the finite element model to be analyzed according to the rated torque corresponding to the current gear to be adjusted; For each gear to be adjusted, the finite element model to be analyzed of the current gear to be adjusted is calculated based on the torsion angle determination function to obtain the torsion angle to be used corresponding to the finite element model to be analyzed.

5. The method according to claim 1, characterized in that Determining the target torsional stiffness of the corresponding finite element model to be analyzed according to each of the parameters to be used includes: According to the ratio of the load to be used and the torsion angle to be used for each gear to be adjusted, the target torsional stiffness of the corresponding finite element model to be analyzed is determined.

6. A torsional stiffness determination device, characterized in that: include: A three-dimensional structure model determination module, used to determine a three-dimensional structure model corresponding to a target gear shaft system; wherein the target gear shaft system includes a gear component, a spline hub and a bearing component; A sub-model determination module to be used, used for meshing the structural sub-models corresponding to the gear components in the three-dimensional structural model to obtain simulation sub-models to be used corresponding to the structural sub-models; A finite element model building module, for determining, for each gear to be adjusted, at least one simulation sub-model to be used associated with the current gear to be adjusted, so as to build a finite element model to be analyzed corresponding to the current gear to be adjusted based on the components to be adjusted corresponding to each sub-model to be adjusted; A module for determining parameters to be used, used to determine the parameters to be used corresponding to each of the finite element models to be analyzed at the corresponding gear to be adjusted; wherein the parameters to be used include a load to be used and a torsion angle to be used; A target torsional stiffness determination module, used to determine the target torsional stiffness of the corresponding finite element model to be analyzed according to each of the parameters to be used; Wherein, the sub-model determination module to be used includes: A structure type determination unit, used to determine whether the structure type of each gear component is a preset structure type; The first sub-model to be used determining sub-unit is used for, if yes, meshing the structural sub-model corresponding to the corresponding gear component based on the first-order hexahedron method to obtain the simulation sub-model to be used of each gear component; The second sub-model to be used determining sub-unit is used for, if not, meshing the structural sub-model corresponding to the corresponding gear component based on the second-order tetrahedron method to obtain the simulation sub-model to be used of each gear component; Wherein, the finite element model building module includes a transmission path determination unit to be used, configured to determine at least one simulation sub-model to be used associated with the current gear to be adjusted according to the transmission path to be used corresponding to the current gear to be adjusted; A gear meshing point determination unit, used to determine the gear meshing points between the components to be adjusted of each simulation sub-model to be used according to preset connection information; wherein the preset connection information includes at least one gear meshing point, and each gear meshing point is used to connect two adjacent components to be adjusted; A spring unit establishing unit, used to establish a spring unit to be used at each gear meshing point; wherein the spring unit to be used includes a linear spring and a nonlinear spring; The finite element model building unit is used to build a finite element model to be analyzed of each of the components to be adjusted at the current gear to be adjusted based on each of the components to be adjusted and the spring units to be used corresponding to each of the gear meshing points.

7. An electronic device, characterized in that: The electronic device comprises: one or more processors; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, wherein the computer program is executed by the at least one processor so as to enable the at least one processor to perform the torsional stiffness determination method according to any one of claims 1 to 5.

8. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the torsional stiffness determination method according to any one of claims 1 to 5 when executed.

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